| ■ Sperm From Stem Cells Claim Challenged | 2009.07.11 |
| Claims by British scientists that they used a new technique to create human sperm from embryonic stem cells are being challenged by other experts. The technique would enable researchers to study sperm development and possibly lead to treatments for male infertility, Karim Nayernia, of Newcastle University, said in a statement Wednesday, the Associated Press reported. The NorthEast England Stem Cell Institute was also involved in the research. However, other British scientists are skeptical about the research and note that the sperm cells created in the laboratory were abnormal. |